Most of my production experience precedes CI/CD as a concept by a number of years. You still don't know though if the rollback fixed it or if just bouncing the

Most of my production experience precedes CI/CD as a concept by a number of years. You still don't know though if the rollback fixed it or if just bouncing the software alone fixed some kind of brownout, and you may not be able to replicate what happened and get stuck unsure of what the bug was and be in a state where you don't know if you can roll forward again or not. Then a developer throws a bit of spackle on the code to address what the problem "might" be -- then when you roll forward people assume that fixed it, which it might not, which is how cargo cults get formed.